A long spiraling walkway winds through the woods, and around a copper beech tree at the center.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

This subterranean shrine beneath a bike rental store celebrates the iconic Italian scooter.

A well-preserved Ancestral Puebloan ruin tucked beneath a desert cliff.

Hidden inside this Arizona fast food franchise is an in-depth exhibit on the famed WWII counterintelligence program.

One of the most extensive and well-preserved collections of dinosaur footprints in North America.

These mid-century motels once housed the workers who built the Glen Canyon Dam.

This Native American settlement dates back to the Pueblo II period.

A striking, menacing sandstone peak towering above a landscape that's equal parts Mordor and the Moon.

A house carved into a rock in the 1940s.

This interpretive path lets you get up close and personal with dinosaur bones.

The site where a nuclear bomb was lowered over 8,000 feet underground and detonated as an experiment in natural gas extraction.

A coal fire has been burning underground here since 1896.

Neal Cassady may still have an open tab at one of Denver's oldest watering holes.

This sidewalk tribute honors Colorado's great culinary creation.